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共找到 2863 与4=t 相关的结果,耗时68 ms
1.We began to learn English three years ago.2.I have been to U.S.A. before.3.He hasn't come to school because he was ill. 4.He has lea
英语
ned English fo
设直线x=2+t y=4-t (t为参数)与抛物线y^2=4x交于两个不同的点P、Q,已知点(2,4).求:(1)|AP|+|AQ| (2)|PQ|(用直线的参数方程的有关知识做)谢谢!
数学
matlab 矩阵编程问题本人新手,不太会且时间紧,以下:y=[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30];T=[0;1;2];我想把y分成10个矩
其他
,每三个分一个,分成[1 2
matlab含变上限积分方程,遇到了很奇怪的问题,要求解的方程如图:要求解alpha;我写出的matlab程序如下:t=0.7256;syms a x;f=int(x/(exp(x)-1),0,a);f1=1+4/a*(f/a-1)-t;answer=solve('f
其他
',a);matlab告诉我
Last month,Mr.and Mrs.Brown 1 to a big city for a day rest(休息).They 2 to go to theA) Last month,Mr.and Mrs.Brown 1 to a big city for a
英语
day rest(休息).T
英语句子找错误:(可以错/对) 1.Once upon a time there is a princess.2.there is some pears.3.the mad ran to the cook.4.The princess ate pizze of bre
英语
kfast.5.There
do does don't does't is am are be can can't (1) what ___sue have?she has many sports things.(2)Do you have some more paper?No,I___.(3)
英语
here___two foo
求matlab高手告诉我怎么画出这样的平滑带点曲线t=[0 1 2 3 4 5 6 7 8 9];>> y=[1 2.31969 4.50853 6.90568 6.00512 5.56495 5.32807 7.56101 8.9392 9.5817]; plot(
其他
,y,'-db','Mark
已知向量组a1,a2,a3,a4,a5,求该向量组的一个最大无关组a1=(1 -1 2 4)^T a2=(0 3 1 2)^T a3=(3 0 7 14)^T a4=(2 1 5 6)^T a5=(1 -1 2 0)^T
数学
matlab 程序出错,帮我看看错在哪儿了函数function dvdt=huxi(t,v) global W L A po pc pn t v P0 P xo xc xn ro rcdvdt=[A/L*po*(xo*P0/100-v(1)/(v(1)+v(2)+v(
其他
)+v(4))*P)-ro*
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